When we were in London, i bought a bunch of books at Harrod's - all "Chick Flick" material with a British bent so they have been fun light reading in different venues. I really had fun with the Shopoholic series of books by Sophie Kinsella. The Undomestic Goddess was a crack up.
Also, on my last cruise, I read Carl Haissen's (sp?) Skinny Dip. That was funny reading too. When I mentioned it on board WAVE, half the crew said they were reading it too. It starts out with a husband and wife on a cruise ship.